ambassador to libya has been killed by armed demonstrators in benghazi. christopher stevens and three other american officials died when the embassy was a salted over protests over an anti- islamic film. >> the film, which was produced in california, protestors say insull's the prophet mohammed because it portrays him as a womanizer. the film has been condemned and beg you to version has been >> are raged protesters attacked the embassy in cairo, where protests are reported to be continuing at this hour. >> the conflict in benghazi was gutted after the attack. four people were killed, including the u.s. ambassador to libya, christopher stevens. thousands had gathered at the consulate to protest. demonstrators forced their way into the building, setting it ablaze. the president of libby's new national congress has condemned the attacks. authorities are searching for the perpetrators. >> him there trying to cloud the joy of the libyan people. this cowardly act comes as one of many acts of evil in the conspiracy against the revolution. and against the securi